
public class CalculatorTest {

	public static void main(String[] args) {
	
		CalculatorInterface calc=new Calculator();
		
		
		System.out.println(calc.add(3,4));
		System.out.println(calc.subtract(4,2));
		System.out.println(calc.multiply(2,4));
		System.out.println(calc.divide(4,2));

	}

}
